3 years ago

I need help asap plzz first person to answer i will mark brainliest

Chemistry

1 answer:

Dmitry_Shevchenko [17]3 years ago

6 0

Answer:

it's both cold and hot weather so it could form a tornado

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How many moles are found in a 100.0 g sample of CuF2?

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How many moles are present in 54.8 mL of mercury if the density of mercury is 13.6 g/mL?

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Answer:

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General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Density = Mass over Volume

Explanation:

Step 1: Define

D = 13.6 g/mL

54.8 mL Hg

Step 2: Identify Conversions

Molar Mass of Hg - 200.59 g/mol

Step 3: Find

13.6 g/mL = x g / 54.8 mL

x = 745.28 g Hg

Step 4: Convert

$745.28 \ g \ Hg(\frac{1 \ mol \ Hg}{200.59 \ g \ Hg} )$ = 3.71544 mol Hg

Step 5: Check

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3.71544 mol Hg ≈ 3.72 mol Hg

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